Questions tagged [science-based]

For questions that require plausible (better than suspension-of-disbelief) answers based on Real World science that are not necessarily constrained to the known limits of Real World science. Contrast with the hard-science, science-fiction and internal-consistency tags. This tag may not be used alone. This tag may not be used with the science-fiction, hard-science, or internal-consistency tags.

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3 votes
1 answer
165 views

What is the timeframe for this abandoned space colony revert to a medieval society?

An outpost on a 2G (gravity) water planet (95% of the world's surface covered by oceans) becomes stranded / abandoned by the Galaxy Government, probably forever. The warp gate in orbit broke, nobody ...
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4 votes
6 answers
1k views

Countering Free-Electron Lidar?

In my hard sci-fi setting, there is a technology called free-electron lidar, usually deployed in space. Edit: Essentially, it is a lidar with the ability to change its laser frequency. One free-...
3 votes
3 answers
216 views

water producing creatures

I'm trying to create a desert planet, and I plan on having water be produced by slug-like beings that consume oxygen and hydrogen from the atmosphere and produce water as a by-product f their ...
6 votes
3 answers
201 views

What mechanism for the transmission of signals between neurons can be faster than our sodium-potassium?

I decided to describe the evolution of scientifically plausible alien creatures and thought about how alien neurons can transmit signals to each other and is it possible in theory some mechanism that ...
8 votes
8 answers
2k views

How to get the Lilim to breed true?

On my worlds of Earth, Ruquelis and Ersutiabu, there are three sexes relevant to this question, Men (XY male), Women (XX female) and Lilim (LX female), where X, Y and L are sex chromosomes. Lilim ...
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6 votes
4 answers
652 views

Should we use Saturn as a future base for colonization?

Despite being a gas giant, and being chilly cold, there are a few reasons I believe Saturn would be an ideal habitat for future colonisation, and here are a few justifications: Saturn actually has a ...
9 votes
8 answers
3k views

Hiding a Continent

I've been doing quite a bit of research on how to hide an entire continent (that's located on Earth, mind you) and I've only found one even slightly possible solution which is the following: prior to ...
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2 votes
2 answers
65 views

Saturnian Cloud Cities Pt. 4- How to deploy the cloud-city

This is my fourth question in the series Saturnian Cloud Cities. Click to see the previous question The diagram of the cloud city is given below, but I will try to describe it in a nutshell. The ...
3 votes
3 answers
186 views

Saturnian Cloud Cities Pt. 3- Wind Turbine Problems

This is my third question in the series "Saturnian Cloud Cities", the previous question is "Ice Harvester Planes" The Saturnian cloud city consists of a giant Titanium-Graphene ...
6 votes
3 answers
244 views

How to stop Jimmy’s (self-conscious) limbs from rebelling?

So Jimmy (the collective name for his brains) has this one-in-a-handwavium-amount blessing/curse. Instead of one central brain, his head, each arm, each leg, and his torso have independently ...
4 votes
3 answers
114 views

Saturnian Cloud Cities Pt. 2- Ice-harvester planes

This is my second question in the series Saturnian Cloud Cities. The first one is Would this concept for a cloud city on Saturn work?) So, I am not going into details about the cloud-city here in ...
2 votes
3 answers
135 views

What are potential avenues in advanced materials/manufacturing for light, high-strength parts for portable cannons, firearms and ammo, and armor?

In my setting, there's a faction known as International Front that combines guerilla and para-militarism with advanced technology (for a guerilla group). Their main goal is to fight and conquer the ...
3 votes
1 answer
147 views

Are high-density moons plausible beyond the frost line?

I have 3 gas giants in my system, 5.23, 10.97 and 15.14 AU respectively from a G3V star with .97 solar luminosity. Would the satellites of these worlds start higher density (rock-ice mix) and ...
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8 votes
1 answer
135 views

Giant mole-like creatures. Are more limbs for digging worth it?

The following creatures, in order, are a sandgroper, a mole cricket and a mole, all creatures that are well adapted for life underground: All of them converged into a similar bodyplan, with powerful, ...
  • 13.8k
4 votes
2 answers
351 views

Island-hopping, gigantic-sized predator?

I wish to create the necessary/sufficient conditions for an island-hopping super predator. Relevant characteristics below: In terms of size, it is to be massive, perhaps akin to a Tyrannosaurus while ...
1 vote
1 answer
128 views

Can knowingly and willingly murdering someone interfere with a women's menstural cycle? [closed]

On Peacemaker, Harcourt, one of the characters, mentions that when she first killed someone, her periods stopped happening for quite a bit. My question is this: Just how realistic is that? ...
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11 votes
8 answers
3k views

What key invention allows the exploration of my hot humid world?

I want to know what key invention would allow my civilization to travel down to and explore its world at sea level. This is similar to my previous question* but this time does not assume metals are in ...
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7 votes
2 answers
578 views

How would prey animals adapt to large aerial predators?

Let's say the world's natural history evolved along much the same lines, but the modern species of large herbivores we're familiar with - ie cattle, deer, elephants, antelopes, etc - had to deal with ...
  • 728
-3 votes
3 answers
96 views

Mantle drills for harvesting geothermal energy

In the mid-2020s, scientists try to harvest geothermal energy, by using drill equipment that drill deep into the Earth's crust and into the mantle, so that the intense heat can be harvested by pumping ...
2 votes
0 answers
90 views

What would the climate of this map look like? [closed]

In this scenario, there is a binary star system comprised of one naturally-made star and another made by the hands of some mysterious hyperadvanced civilization. The latter is a white giant, an ...
  • 14.3k
7 votes
1 answer
301 views

Support Equipment for a Time Machine

Okay, the time machine itself is science fiction. I've got some handwavium about transformation of Einsteinian equations and unconventional polarization of electromagnetic frequencies and so forth. ...
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5 votes
4 answers
688 views

Is there a way to turn plants into energy without burning them?

I'm thinking of an energy source where you could put organic life forms in and get out energy that could power something (edit: something that can be transported in a small space; where you can put ...
0 votes
2 answers
30 views

Solution to Ozone depletion-Stratospheric injection?

In the mid-2020s scientists have realized that although the ozone layer is recovering, it is only doing so at an alarming slow rate. So they come up with an solution. Many titanium tanks are put in a ...
3 votes
2 answers
118 views

Would it be realistically possible for an Earth-like planet to have a "hidden" moon?

I essentially just want the moon to always be in shadow of its planet so that from the surface of the planet it cannot be seen at any time of day - might "appear" as a black orb that blocks ...
  • 115
-2 votes
1 answer
126 views

If human babies are born underdeveloped, how long would pregnancy need to be in order to be considered fully developed? [closed]

In my world there is a certain sapient species with height around 3 meters, whose bones are more durable than humans, meaning they can afford wider pelvis than most human women I personally believe ...
10 votes
1 answer
220 views

How large could an aerogel planet get?

Most of the world's lightest known materials are aerogels. In recent years, their mechanical strength has greatly improved, due to the creation of composites, crosslinked forms, and especially ...
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7 votes
5 answers
1k views

How can my fictional race of humans extend the area of their world they can explore?

This world is an alternate Earth similar size, mass and distance from its star to our Earth. The atmosphere is similar in composition to Earth except at 5000m altitude the pressure is two bar and the ...
  • 33.9k
-1 votes
1 answer
90 views

Quantitying religious concept [closed]

Once upon a time, there were people on a planet far away who believed that our galaxy was a brain. Each star would be a neuron. In the absence of wormholes and other ways to get around the speed of ...
10 votes
3 answers
1k views

Can a long retractable neck work with an exoskeleton?

In my world mostly composed of arthropods, I wanted one to fill a niche similar to that of a common snapping turtle (an ambush predator that extends its long neck to strike quickly at prey), and ...
  • 13.8k
4 votes
2 answers
145 views

Could a double binary system support planets?

Disclaimer: I know that the term ‘double binary’ isn’t real (yet). Hypothetically, there is two pairs of binary systems with the center of gravity for the individual binaries are orbiting in a binary ...
-3 votes
4 answers
314 views

How long would it take an average person to climb an one-hundred and twenty billion feet tower? [closed]

I saw a recap of a film called Fall released this year. It is about 2 girls stuck on the 4th highest structure(supposedly) in the USA. It got me to thinking about very tall things and climbing them. I ...
0 votes
1 answer
130 views

Feasibility living tissue product

Once upon a time, there was a gang that wanted young women to infiltrate the upper class. Unfortunately due to genetic modification and better nutrition the elite was much taller two feet on average ...
10 votes
2 answers
3k views

Could a binary star system support life?

If we take an earth-sized planet with similar atmosphere, and put it into a P-type binary orbit, could it sustain human life? For sake of clarity, assume both stars are G-type stars and the planet is ...
4 votes
1 answer
119 views

How to calculate temperatures on my world given different pressures and altitudes

The fictional world is Earth-like with 1g gravity and similar solar radiation to Earth but the inhabitants only live on very high plateaus at around 5000m where the pressure is already 3bar. How do I ...
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4 votes
1 answer
293 views

Super hot tropical forest

Consider an Earth like world except much hotter with extremely hot and wet tropical rain forests. Assuming 100% humidity, how hot might the alternate Earth tropics get and still support tree like ...
  • 33.9k
11 votes
10 answers
5k views

Under what conditions would a space battle involving a relatively large number of vessels be barely visible on the surface?

Imagine a space battle happening high above Earth (~25k miles, or ~40200 km). It's right above the observers who are standing on the planet's surface. Both armies have the same amount of spacecraft, ...
  • 13.8k
1 vote
2 answers
128 views

What would the recovery period for a five year coma look like? [closed]

So, I've been kicking around a sort-of "return from another world" idea for a bit now. Basically, the MC gets the crap kicked out of him and ends up in a deep coma with very little brain ...
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6 votes
10 answers
6k views

How can an alien civilization mostly stay as a Monarchy but still be advanced enough to travel around the Galaxy?

They have tried Democracy The civilization is very much similar to human civilizations but I want it to stay as a monarchy yet still have technology advanced enough to travel around the galaxy. Is it ...
6 votes
3 answers
254 views

A species that is warm-blooded when a juvenile, but cold-blooded (or at least lukewarm-blooded) when an adult [closed]

In my world, there is a species of squamates from the Toxicofera clade named dragons (their scientific name is Draco draco). Some of their characteristics include: In comparison to human beings, they ...
6 votes
1 answer
196 views

If Venus were at .85 AU, Earth at 1.1 AU, and Mars at 1.4 AU from the Sun, would they disrupt each other's orbits at conjunction?

I have returned to this forum from Astronomy with this question because it immediately got down-voted. Maybe these hypothetical questions are more appropriate here? I am happy to take advice from ...
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4 votes
4 answers
490 views

Ubiquitous perception filters in 2030s

For my story plot to start it needs to exist a widespread technology that through a software update or patch can be (ab)used to filter out copyrighted material from perception. My idea was a neural ...
8 votes
4 answers
780 views

Possible reasons for a planet/celestial body not tidally locked to have a region in constant darkness?

Trying to form a mostly logical basis for a world that would have one region always in darkness while also having a day-night cycle. My first thought was to ask if a planet could have an axial tilt ...
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3 votes
1 answer
227 views

Is my proposed neural implant feasible?

In my story a computer-brain interface called T-ANGI is as widespread as smartphones are today. They allow users to "outsource" computation intensive tasks and memory retrieval to data ...
8 votes
10 answers
2k views

Logical/Scientific Explanation for Umbrakinesis?

I'm working on a story where the characters have elemental-based powers based on natural material/materials/phenomena found in nature. So far, each of the powers makes sense on a physical level, since ...
3 votes
1 answer
195 views

Would a genetically engineered animal with wheels be a viable species? [duplicate]

There have been several discussions both on this website and others about the viability of wheeled animals and why there are no current biological examples of it. A big issue with an animal evolving ...
-2 votes
3 answers
212 views

Superbabies can walk right from birth. How many times are they stronger than a normal baby?

XXIII century genetic engineering creates superbabies that can walk straight out of the LDR (labor, delivery, and recovery) room right after being born. These superbabies are enhanced by a set integer ...
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-2 votes
1 answer
73 views

How smart would my cyborg be? [closed]

I have created a world where the main character is a cyborg, a petri dish with neurons inside a machine, how smart could a neuron culture in a petri dish be?
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9 votes
3 answers
1k views

Detecting offworlders with cameras

There is an Earthlike planet inhabited by Earthlike lifeforms including beings that are human for all practical purposes. The primary visible human civilisation is roughly equivalent in technology to ...
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-1 votes
1 answer
97 views

Surgical techniques for physical makeover

In the world the elite tends to be tall. The commoners tend be much shorter two or more feet shorter. https://www.hss.edu/conditions_limb-lengthening-overview.asp talks about several inches of ...
26 votes
6 answers
7k views

Is it biologically plausible for a land animal to drink saltwater and not drink freshwater?

I'm trying to come up with a land animal that can drink saltwater but for some reason cannot drink freshwater. The advantage of drinking saltwater would be that they can get drinking water straight ...